/*******************************************************************************
 * Copyright 2010 Ray Ling
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ******************************************************************************/
package org.ring.rinject.collection;

import java.util.HashMap;
import java.util.Map;

import org.ring.rinject.exception.AlreadyMappedException;

public class Table<K, B, C> {
	protected final Map<K, Mapper<B, C>> table;

	public Table() {
		table = new HashMap<K, Mapper<B, C>>();
	}

	public Table<K, B, C> set(K key, B base, C concrete)
			throws AlreadyMappedException {
		return set(key, base, concrete, true);
	}

	public Table<K, B, C> set(K key, B base, C concrete, boolean overwrite)
			throws AlreadyMappedException {
		Mapper<B, C> m = table.get(key);
		if (null == m) {
			m = new Mapper<B, C>();
			table.put(key, m);
		}

		m.set(base, concrete, overwrite);
		return this;
	}

	public Mapper<B, C> mapper(K key) {
		return table.get(key);
	}
}
